14 bit 125MSPS Dual Low Power ADC - ADS4245

ADS4245 (ACTIVE)

14 bit 125MSPS Dual Low Power ADC

Description

The ADS424x/422x are low-speed variants of the ADS42xx ultralow-power family of dual-channel, 14-bit/12-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high-dynamic performance, while consuming extremely low power with 1.8V supply. This topology makes the ADS424x/422x well-suited for multi-carrier, wide-bandwidth communications applications.

The ADS424x/422x have gain options that can be used to improve SFDR performance at lower full-scale input ranges. These devices include a dc offset correction loop that can be used to cancel the ADC offset. Both DDR (double data rate) LVDS and parallel CMOS digital output interfaces are available in a compact QFN-64 PowerPAD™ package.

The devices include internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. All devices are specified over the industrial temperature range (–40°C to +85°C).

Features

  • Ultralow Power with Single 1.8V Supply,
    CMOS Output:
    • 183mW total power at 65MSPS
    • 277mW total power at 125MSPS
    • 332mW total power at 160MSPS
  • High Dynamic Performance:
    • 88dBc SFDR at 170MHz
    • 71.4dBFS SNR at 170MHz
  • Crosstalk: > 90dB at 185MHz
  • Programmable Gain up to 6dB for
    SNR/SFDR Trade-off
  • DC Offset Correction
  • Output Interface Options:
    • 1.8V parallel CMOS interface
    • Double data rate (DDR) LVDS with programmable swing:
      • Standard swing: 350mV
      • Low swing: 200mV
  • Supports Low Input Clock Amplitude
    Down to 200mVPP
  • Package: QFN-64 (9mm × 9mm)
  • APPLICATIONS
    • Wireless Communications Infrastructure
    • Software Defined Radio
    • Power Amplifier Linearization
  • PowerPAD is a trademark of Texas Instruments Incorporated.
    All other trademarks are the property of their respective owners.

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    Parametrics Compare all products in High Speed ADC (>10MSPS)

     
    Resolution (Bits)
    Sample Rate (max) (SPS)
    # Input Channels
    SNR (dB)
    ENOB (Bits)
    SFDR (dB)
    SINAD (dB)
    Power Consumption (Typ) (mW)
    Analog Input BW (MHz)
    Architecture
    DNL (Max) (+/-LSB)
    INL (Max) (+/-LSB)
    Digital Supply (Min) (V)
    Digital Supply (Max) (V)
    Analog Voltage AV/DD (Min) (V)
    Analog Voltage AV/DD (Max) (V)
    Reference Mode
    Input Range
    Interface
    Rating
    Operating Temperature Range (C)
    Approx. Price (US$)
    ADS4245 ADS4222 ADS4225 ADS4226 ADS4229 ADS4242 ADS4246 ADS4249
    14     12     12     12     12     14     14     14    
    125MSPS     65MSPS     125MSPS     160MSPS     250MSPS     65MSPS     160MSPS     250MSPS    
    2     2     2     2     2     2     2     2    
    73.4     70.9     70.8     70.5     70.5     73.6     72.8     72.8    
    11.9     11.5     11.5     11.4     11.3     11.9     11.8     11.7    
    89     91     89     87     80     92     87     80    
    73.2     70.8     70.7     70.4     70     73.5     72.6     72    
    277     183     277     332     470     183     332     470    
    600     600     600     600     600     600     600     600    
    Pipeline     Pipeline     Pipeline     Pipeline     Pipeline     Pipeline     Pipeline     Pipeline    
    1.7     1.5     1.5     1.5     1.5     1.7     1.7     1.7    
    5     3.5     3.5     3.5     3.5     5     5     5    
    1.7     1.7     1.7     1.7     1.7     1.7     1.7     1.7    
    1.9     1.9     1.9     1.9     1.9     1.9     1.9     1.9    
    1.7     1.7     1.7     1.7     1.7     1.7     1.7     1.7    
    1.9     1.9     1.9     1.9     1.9     1.9     1.9     1.9    
    Int     Int     Int     Int     Int     Int     Int     Int    
    2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Parallel CMOS
    Parallel LVDS    
    Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
    -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
    41.00 | 1ku     14.40 | 1ku     29.50 | 1ku     39.00 | 1ku     59.85 | 1ku     28.00 | 1ku     65.25 | 1ku     118.50 | 1ku    

    Other qualified versions of ADS4245

    Version Part Number Definition
    Enhanced Product ADS4245-EP Supports Defense, Aerospace and Medical Applications

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